Aqueous redispersible powders which contain a water-soluble poly

Details Aqueous redispersible powders which contain a water-soluble poly Aqueous redispersible powders which contain a water-soluble poly

1986-10-08

1987-11-03

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

10628712, 10628713, 10628714, 10628716, 524 22, 524 25, 524 43, 524 45, 524 46, 524 47, 524 48, 524 50, 524 51, 524445, 524446, 525100, 525101, 525103, C08L 8900

Patent

active

047044160

ABSTRACT:
Aqueous redispersible powders which contain a water-soluble polymer and at least one organic silicon compound, in which at least 50 percent by weight of the organic silicon compound(s) used to prepare these powders are liquid or solid at room temperature at 1,020 hPa (abs.), have a boiling point of at least 150.degree. C. at 1,020 hPa (abs.), and contain an average of not more than 1.8 SiC-bonded organic radicals per silicon atom, and have at least one hydrogen atom bonded directly to silicon per molecule, or at least one hydroxy group bonded to silicon per molecule, or at least one hydrocarbon radical bonded to silicon via oxygen per molecule which may be substituted by an alkoxy group, or a mixture of at least two such condensable substituents in which the organic silicon compound(s) are used in an amount of at least 30 percent by weight, based on the total weight of the powder (calculated as anhydrous powder). These powders are obtained by spray-drying aqueous mixtures of the water-soluble polymers and the organic silicon compound and may be used, for example, as hydraulic binders, as clay and coloring materials, for rendering bulk materials hydrophobic when diluted with water, and as binders for finely-divided inorganic or organic materials.

REFERENCES:
patent: 3959102 (1976-05-01), Wajs et al.
patent: 4281233 (1981-07-01), Coupek et al.
patent: 4446259 (1984-05-01), Vasta

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